B - Operations – Transporting – 61 – B
Patent
B - Operations, Transporting
61
B
104/43
B61B 13/04 (2006.01) E01B 25/24 (2006.01)
Patent
CA 1231004
ABSTRACT OF THE DISCLOSURE To improve the stiffness and permit ready attachment of the track structure to holding brackets (20), the upper and lower track portions (2, 3) have mutually facing flanges (5, 6) formed thereon, projecting towards each other, extending longitudinally of the track structure, and being positioned in vertical alignment at the same side of the web, parallel to the central plane of the web, and spaced from said plane by the same distance. The sections may be made as a unitary extrusion (Figures 1, 3), for example of aluminum or steel, with hollow or solid rail portions (Figures 1, 2, 3; Figure 3A) or may be made as rolled sheet-metal elements (Figure 2) in which the rail portions are separately rolled structures welded, by spot-welding or bead-welding, to the central web. Preferably, the central web has, roughly, .OMEGA. shape, to permit an end portion (43) of a holding bracket to fit therebetween to provide direct force transfer from the rail portions (2, 3) to the end portion of the holding bracket.
423012
Hortnagl Franz
Wagner Siegfried
Fetherstonhaugh & Co.
Stahl (r.) G.m.b.h. & Co.
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